The Schneider 4x4" 4mm Green True-Streak Filteris designed to be used perpendicular to a point light source such as the sun, a light bulb, or a candle. Within the filter's glass is a combination of fine line types whose action is limited to point light sources. Upon those light sources, those lines create the effect of a scene or image that has been recorded with an anamorphic lens and then displayed using a complementary reverse projection lens. This can result in prominent, elongated streaks that are symmetric and extend horizontally from each point light source for the purpose of drawing attention to a specific part of the frame, or to create a visually dramatic effect.

If an image or footage is captured with an anamorphic lens for the primary purpose of obtaining a greater aspect ratio than what is possible when only using spherical lenses on a 35mm format, the direct result will appear compressed and distorted. Projecting this compressed and distorted footage or imagery through a reverse anamorphic projection lens allows elements within the scene to be viewed in their correct proportions. A complementary effect of this process after it is completed is the creation of elongated, blue-colored, horizontally symmetrical highlights from point light sources that can extend through the frame.

Many cinematographers and photographers find this effect desirable and the Schneider 4 x 4" 4mm Green True-Streak Filter is intended to allow such highlights to be easily reproduced when using optics that do not have an anamorphic design. This filter renders the streaks it helps to create with a green hue, instead of the blue highlights generated when using traditional anamorphic optics that are not designed to suppress streaking. True-Streak Filters that are formulated to create red, orange, yellow, blue, pink, or violet banding instead of green are also available, as well as Clear True-Streak Filters that can allow existing colors or lack of colors displayed by point light sources to be maintained.

The line types within this filter's glass are placed 4mm apart from each other. True-Streak Filters with spaces of 3mm, 2mm, or 1mm between their lines are also available where this filter type's effect becomes progressively stronger as the spacing between those lines is decreased.

This filter is most effective for pictures where the light source used to generate the streak effect is a highlight with a significant degree of contrast from the rest of the image. It is constructed from water white glass for clarity as well as color fidelity.

Streak Effect from Point Light Source    Anamorphic, Symmetric, Elongated Streaks    Horizontal Streaks from Light Source    Green Color for Streaks    Water White Glass Construction    Padded Pouch

• Creates prominent, elongated streaks that are symmetric and extend horizontally from point light sources within a scene
• Draws attention to a specific part of the frame, or can create a visually dramatic effect
• Allows the effect of anamorphic optics upon highlights to be reproduced when using optics that do not have an anamorphic design
• Creates green-colored streaks
• Constructed from water white glass for optical clarity and color fidelity
• Padded pouch included for storage and transport

Related Questions and Answers

Q: 1. Will this lens work on Panasonic G9ii ?

A: Yes, the 7artisans Photoelectric 4mm f/2.8 Circular Fisheye Lens for Micro Four Thirds is compatible with the Panasonic G9ii. It is manual focus and manual exposure only.

Q: 2. Will this work on a Sony a7R3?

A: The answer is technically yes. This lens will fit on your Sony but it's made to work on Sony APS-C/cropped sensor cameras. So if you put this on a full frame you're going to get a cropped sensor/APS-C framing and lower resolution.

Q: 3. What is the best enlarger lens to print 35mm negatives on a Beseler 4x5 enlarger?

A: A 50mm Schneider or Rodenstock lens would be most useful.

Q: 4. Is there a version for RF?

A: No, the 7artisans Photoelectric 4mm f/2.8 Circular Fisheye Lens does not come in a RF version. Currently we have a 7artisans Photoelectric 4mm f/2.8 Circular Fisheye Lens for Canon EF-M.

Q: 5. Will this work with a Panasonic GH4? Or Panasonic S2?

A: This 7Artisans 4mm f/2.8 Circular Fisheye Lens for Micro Four Thirds can fit the Panasonic GH4. It does not work on the Panasonic S2.

Q: 6. Will this work on a Canon R5? How much of the senaor would be "wasted?"

A: The Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Canon RF only provides a circular fisheye in the APS-C sized area of the sensor. This would not use any of the larger Full-Frame sensor area of the Canon EOS R5 Mirrorless Camera at all.

Q: 7. Is this compatible with the Zeiss CP3 Lenses?

A: The Zeiss CP.3 Cine Lens set have a front diameter of 95mm. it Bright Tangerine does have a 114mm-95mm adapter ring you can use for compatibility: https://bhpho.to/2jZb4l7

Q: 8. does the 81.5 mm fit an 82mm step up? why 81.5mm?

A: I'd measure the outside diameter of the the step up with something accurate like vernier calipers or a micrometer. I purchased the 90mm push on Cap to fit a Schneider centre ND filter which I measured to be exactly 90mm outside diameter and the cap was a fairly tight fit.

Q: 9. good for Cannon EOS 60D???

A: The Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Micro Four Thirds is only compatible with Olympus and Panasonic cameras. It is not compatible with Canon cameras.

Q: 10. Will this work with the LUMIX GH-5?

A: The Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Micro Four Thirds is compatible with Panasonic Lumix DC-GH5 .